157k views
0 votes
The number of DVD's sold at Fry's Electronics in a month was 920 and the number of DVD's sold decreased by 12 per month. The number of Blu-ray discs sold at Fry's Electronics in the same month was 502 and the number of Blu-ray discs sold increased by 26 per month. Write a system of equations to model th situation. If this trend continues, in how many months will the number of DVD's sold each month equal the number of Blu-ray discs sold each month? How many each disc is sold in that month?

User CaseyWebb
by
7.7k points

1 Answer

1 vote

Answer:

11 months

788 disc

Explanation:

Let

x = number of months

Fry's Electronics;

= 920 - 12x

Blu-ray discs:

= 502 + 26x

Equate both equations

920 - 12x = 502 + 26x

920 - 502 = 26x + 12x

418 = 38x

x = 418/38

x = 11 months

number of months = 11

Substitute 11 into any of the equation

Fry's Electronics;

= 920 - 12x

= 920 - 12(11)

= 920 - 132

= 788 disc sold in that months

User Adeel Siddiqui
by
7.7k points
Welcome to QAmmunity.org, where you can ask questions and receive answers from other members of our community.

9.4m questions

12.2m answers

Categories